Lectron Kawasaki KX250 BIG-AIR Billetron PRO-SERIES Carburettor - 40mm 2-Stroke Carburettor

Introducing the BILLETRON PRO-SERIES Big-Air 40mm 2-Stroke Carburettor 300cc-500cc

Now included as standard - X-Celerator Metering Rod

Anodised colours also available - Red / Blue / Orange / Black

(These have a 14 day lead-time from time of order) Please add a colour choice to your basket using the link to 'Carburettor Upgrade Additions' to add to your carb order: 

Designed and engineered in collaboration with some of the top engine builders in the USA, the BILLETRON PRO-SERIES obliterates what was previously thought possible for two-stroke performance. The BILLETRON PRO 38 has created a class of its own in performance carburettors for 125cc-300cc bikes. This carburettor combines the best of all worlds, we've taken the benefits of OEM fuel flexibility and adjustability of 3 fuel circuits, made it trackside adjustable within seconds, and combined it with an engineered bore design that provides tailored air flow and velocity Dynamics specific for volumetric capabilities of 125cc-300cc engines. This results in the most adaptable, simple, and powerful product on the market. Period. Our easily adjusted three circuit fuel delivery allows isolated adjustment at different points of the powerband within seconds. This allows riders and engine builders to gain control on when and where they need fuel to achieve optimal AFR at combustion and unlock new levels of performance. Achieve your bikes perfect fuel delivery, trackside, in a fraction of the time. This, combined with the notorious air-flow capability that has landed Lectron products on podium after podium, is what delivers a truly unmatched product.

KEY FEATURES;

• 3 Adjustable Fuel Circuits: Metering rod - Torque Jet - Power Jet Tailored Bore Design - Engineered to maximize and optimize air flow and velocity in 125cc-300cc engines
• TPS option Constant vacuum jetting system provides immediate fuel delivery resulting in incredible throttle response *NON-TPS WILL SHIP WITHIN 2-3 BUSINESS DAYS*
• Machined billet aluminium construction reduces weight and increases strength Reuses the stock throttle and cable Redesigned bell and bore for increased bottom end performance Shorter overall length (~78mm) and height allow for a better fit
• The choke has been redesigned and moved to the left side for easier and more consistent usage A larger, more accessible idle screw with finer threads allows for easier and more accurate tuning
• The power jet screw is now located horizontally on the left side and can be turned by hand for quick adjustments Stronger, clear float bowl with bowl drain and integrated g-force kit
• New float system with a proprietary, high flow, sprung needle seat valve
• Redesigned top cover for easier access to the slide and metering rod and further weight reduction New metering rod adjustment mechanism allows for 1/8th turn increments Easy Tuning Kit (sold separately) makes metering rod adjustments quick and simple Includes 2 quick change billet thumbscrews for the top cover and a metering rod adjustment tool
• Aluminium H-Style slide Relocated vents Metric hardware “Jetless" (no jets) Automatically compensates for elevation & temperature changes Dramatic increase to fuel economy Made in the U.S.A

Performance Improvements: Hits similar to a well tuned jetted carburettor with the smoothness and consistency of a metering rod carburettor Smoother power delivery than stock Significantly more bottom end hit Significantly improved throttle response Faster power jet activation The new slide design and metering rod location improves idle Finer idle adjustments

Now included as standard - X-Celerator Metering Rod The X-celerator metering rod is Lectron's latest development that brings acceleration and throttle response to new lights. This new technology supplies a small burst of fuel when quickly opening the throttle that counteracts the abrupt influx of airflow and eliminates throttle lag or bog. This results in instant throttle response and immediate power delivery regardless of where you're at in RPM. The new design mechanically and automatically controls the right amount of fuel depending on your throttle position and rate of throttle opening to assign your engine the right amount of fuel when and where you need it.

Optional Extra - EZ Tuning Kit This kit includes the metering rod adjustment tool (Universal across all Lectrons) and the Billetron specific quick change top cover thumbscrews. Upgrade options are available in 'Lectron Spares'